Brian P. Marx, Ph.D., is deputy director, Behavioral Science Division, National Center for PTSD and a professor of psychiatry, Boston University School of Medicine. He is an expert in the assessment and treatment of PTSD. With Dr. Denise Sloan, he is the co-developer of Written Exposure Therapy (WET) and has spent the last 20 years conducting a systematic line of research which supports the development and efficacy of this treatment. Dr. Marx has published over 200 scientific articles and has received external funding for his work from numerous organizations including the United States Department of Veterans Affairs, United States Department of Defense, and the Centers for Disease Control and Prevention. Dr. Marx is on the editorial board of several professional journals. He is a previous winner of the Award for Outstanding Contributions to the Science of Trauma Psychology from Division 56 of the American Psychological Association. Dr. Marx obtained his doctorate in clinical psychology from the University of Mississippi.